Liquid dispenser



i Jan. l, 1929.

G. A. BOBRICK LIQUID DISPENSER Filed June 6. 1922 2 SheetsSheet l I I H/f. 1.5 0f/eey Filed June 6. 1922 2 Sheets-Sheet 2 s if I 4 .3.3 5 459 55 /7 y/ Z /j 2p f5 /2V a 0 J5, a4 a@ a7 /s/a ZM/4 ,l A Y /5 W /4 40 if W 1 4 ffl www Patented Jan. 1, 1929..

UNiIEDgsTATEs G1 BRIELA. BOBRICLOE Los ANGELES, CALIFORNIA; MARY E. BOERIOK, ADMINISTRA- I IRIX OE SAID GABRIEL A. BOBBIOK, DEGEASED, ASsIGNOR To DOBRIOK CHEMICAL COMPANY, OE Los ANGELES, CALIFORNIA, AOORPORATION OE CALIFORNIA.

LIQUID DISPENSER.

Application mea :une e, 1922. serial No. 566,246.

This invention has todo with improve.-k

particular inlet closed while the piston or plunger conments in liquid dispensers, and the let closing'valve'remains stationary with the form of the invention hei'ein illustrated and\tinues lits inward movement for .the purpose described has been designed specifically for dispensing liquid soap; although it w ill be clearly understood that the invention 1s not necessarily limited to dispensing that particular kind of fluid. However, the invention will be more easily understood from an explanation of it as applied speeiically to liquid soapl dispensing. y 1

I have encountered certain diiiculties in making liquid soap dispensers, particularly in providing a positive action without any tendency to leakage, and in providing a simple and easily and economically manufactured device. It is very important in -the manufacture of liquid soap 'dispensers that no leakage occur when the dispenser is not in use; it is also important to provide a dispenser ot such form that the user is only able to Obtain a. measured amount of soap on each operation of the dispenser; it is important that the user cannot operate the dispenser in such a manner as to let soap run in a con tinuous stream through it. It is with lthese general objects in view that my present invention has been made.

lt may be`well at the outset to compare in a general way the device of my lpresent invention with my former soap dispensing devices, as in that manner a clearer idea of the novelties of the present device may be had. For instance in my Patent No..1,364,347, J anuary 4, 1921, a pump mechanism is disclosed in which there vare two valves, one in associatio-n with the plunger or piston and the other acting as a check valve to close the intake orifire on the down-stroke of the plunger.

ln my copending applications, Serial No. 318,186, filed August 18, 1919, Serial No. 397,- 693. July 29, 1920, and Serial No. 446,885, led February 21, 1921 -there are disclosed means for closing the intake orifice by a pin moving at all times with and projecting from the plunger and adapted to move into the orifice when the plunger is pressed inwardly.

My present form of device attains all the of ej ecting the liquid soap through the outlet. The inlet, is closed at the very moment that the outlet atthe' other end is opened, and this prevents liquid running through the device in'a continuous stream; and only a predetermined amount of soap can be obtained in the charge that is pressed out by the inward stroke of vthe plunger or piston. The action isgpositive, and no extreme accuracy or close fitting is required in manufacturing the parts.

pressed inwardly; Figs. 3 and 4 are respectively similar views OI" another form of device; Figs. '5 and 6 are respectively similar y views of another form of the device; and Figs. 7 and 8 are respectively similar views of another form of device.

Referring first tothe forni shown in Figs. 1 and 2 l show a tubular body 10 with a bore 11, screw threaded at 12, at one end for attachment to a; soap supply pipe. At the other end of the body the bore is reduced as shown at 13, and this reduced portion of the bore is arranged to pass the stem 14 of the plunger or piston 15, which plunger is of a size to fairly fit bore 11. It will be understood that this fit need not be liquid-tight. A valve member 17 here shown in the form of a flexible sealing washer, is carried by the yplunger as illustrated, in al position to press outwardly normally against a valve seat or sealing shoulder 18 at the entrance of the reduced bore 13. `lt will be understood of course that the provision of washer 17, in the valvular action here described, is only for the purpose of insuring at all times a tight seal. lt will be readily 'understood that the plunger itself could bear against shoulder 18 with similar results. But it is not absolutely nec'eary to make a valveor washer 17 and lseat 18. The seat 18 is necessary to` rovide a stop for the plunger and the valve v1s a precaution to,v prevent leakage should valve 36 get out of order or something should get-.under the valve. communicates with the reduced bore 13; so that when the parts are in normal position, as shown in Fig. 1, soap'cannot reach the out-v let spout due to the sealing' action of this valve.

Plunger stem 14 is preferably somewhat smaller than bore 13 so as to provide a passage for theso'ap when the plunger is moved inwardly. To prevent leakage of the soap outwardly around the plunger stem, I provide a flexible cup 20 that surrounds an enlar ement or bead 22 around stem 1 4 and is hel in sition by a ferrule 23 that in turn is held 1n place. by the operating handle 25 screw-threaded on to stem 14.

The intake orifice of the device is located as 'shown at 30, in a bushing 31 t-hreaded into the body near its inner end. This bushing has a conical valve seat 30 at its inner face around one end of intake orifice v30, and the correspondingly shapedconical end 33 of closure valve stem 34 forms a valve that is adapted to seat lon the conical valve seat 30n as shown in Fig. 2. This stem 34 is loosely and slidably mounted in a bushing 35 carried in the rear end of plunger 15. Inside this bushin the valve stem 34 has a flange 36 and the v ve stem is normallypressed rearwardly to the osition shown in 1g. 1, by spring 37, and in t isvposition the flange, with 'an ap urte- .nant flexible washer 36, forms a va ve to close the bushing opening 35a through which valve stem 34 loosely passes. Thus, in the positionshown in Fig. 1, the valve at 36--36i is normally closed, and it is not opened unt-il the instant valve 33 seats on valve seat 30 to close the inlet orifice.

A flexible cup 45 surrounds the bushing 35, as illustrated in the drawings, to make a tight joint withbore 11 and prevent liquid from passing around plunger 15. Spring 40 that presses the plunger forwardly is confined between bushlng 31 and flange 35" on bushing 35. Openings serve to connect the interior of the hollow plunger head and the l:interior of bushin 35 with the space in bore 11 forward of tge plunger.

In the normal position of the parts liquid soap fills bore 11 to the left of the plunger. Upon inward movement of the plunger actuated by handle 25, the valve 33 shortly engages wlth the valve seat 30.1 and closes the intake opening after only a very short inward movement of the plunger. The valve at 17 has left the valve seat or shoulder 18; and

. then, at the same instant that the valve 33 closes the intake opening the valve at 36-36" opens the opening at 35, allowing the liquid l to flow into and through bushing 35v on fur- The outlet spout 19v ther inward movement of the lunger. This liquidthen, on further inwar movement of the plunger, flows through openings 60 and into and through the bore 11 to the ri htof the plunger and thence out through out et 19. Upon return movement of the plunger the and when the inlet openinv 30 is finally opened, then the liquid soap flows in and fills the bore 11, to theleft of' the plunger ready for another operation. It .will be particularly noted that only a. measured quantity of soa-p can be obtained at one operation, and

.valve at 33 30 is opened.

This dispenser that I have now just ex y plained has several distinct advantages. It

is positive in action; its outlet ispositively and doubly closed when in normal inactive position, and its inlet is positively and tightly closed when the plunger is moved inwardly and is, by the inherent nature and lconstruction of the device, necessarily closed at the .parts come back to their normal positions,4 i

very instant thevalve 36-36a is opened.

Furthermore, as I have explained, and as can readily be seen from the accompanying drawings, it-is not necessary that great accuracy be used in manufacturin the various parts and no great accuracy of tis requisite at any point in the whole device. The exact distance between 33 and 30FL is of no consequence; as the construction makes the valve at 36-36 open at the instant 33 seats on 30a, regardless of the normal distance between those two last mentioned parts.

In Figs. 3 and 4 I illustrate a modification of the above described form. Herefthe intake orifice bushing 31 has a flexible valve seat washer 47 against which the cup-shaped valve 33a on the end of intake closure valve stem 34 is adapted to seat when the plunger is moved inwardly. A metal washer 46 bears against valve seatswasher 47, and spring 40 in this case bears against metal washer 46. The inner end of valve stem 34 also has a small guide stem 50 that extends into a. bore 51 that illu extends forwardly into plunger stem 14, as il- In this form of device I have shown slightly dierent packing means for plunger stem 14 in the bore 13, Ebut as this packing means is substantially the same as that described in my application Serial No. 397,693, it needs no. description here.

In Figs. 5 and 6 I have shown another modilication of the foregoing described lforms. Here the plunger 15 is fitted loosely in the bore 11 so that liquid soap may pass around the plunger instead of' passing through it. In addition to the packing cup 20 that remains at all times in bore 13, I provide another ieXible cup at 21 that is fitted over an enlargement or bead 22 on the plunger stem and is held in place b a ferrule 24,' the other cup 20 being then tted over the end 22a of this ferrule as illustrated. Cup 2l normally stands in bore 13 close to bore 11; and its position is such that when the inlet closure valve is just closing theinlet orifice, then this cup 2lis just assing out of eective engagement with tie bore 13; so that it then no longer seals the bore 13 and outlet 19. For instance it may be arranged that cup 21 is, at that point of operation, just passing out of bore 13 into bore 11, or has at-that time just passed suiiiciently out into enlargement 13a to allow liquid to pass around the cup and through bore 13 to ontlet 19.

The intake closure valve is formed somewhat did'erently here. Valve stem 34l has a `valve formed at its end, for instance by a flexible washer 33", that is adapted to seat on an annular ridge or bead 30b at the inner face of bushing 31 and surrounding intake orifice 30. In the operation of this device upon the first inward movement of the plunger this intake oriice is closed; and at the same time the cup 21 passes out of the bore 13 to allow liquid to pass to outlet 19. 'Ihen on further inward motion of the plunger the liquid is pushed out through outlet 19. Upon the return movement the cup 21 seals the outlet at the same time that valve 33b opens, thus preventing any possibility of a steady stream flowing through the device; and when the device is in its normal position the valve at 17 further seals the outlet.

In the forms shown in Figs. 7 and 8 there is another slight modification in comparison with the forms in Figs. 5 and 6 to the extent that spring 37 is here placed around valve stem 34 outside the bushing 35, instead of inside the bushing 35 as in the other form. The

inner end of the valve stem is then provided with a screw 65 to act as a stop to limit its spring impelled movement.

I claim:

1. In a liquid dispenser, the combination of body having a chamber therein and having a bore leading to its exterior from said chamber, a stem extending through said bore and formed with ,a handle at its outer end for manipulation, and said stem being spring normally pressin projectible into said chamber through the ore, an enlarged hollow head at the inner end of the stem within the chamber, said body having an intake opening for said chamber at its inner end and havin@ an outlet opening communicating with said rboro at a little distance from the chamber; a valve member carried by the stem at the outer end of said enlarged head and adapted normally to press against a shoulder ot the chamber Wa ll around the bore so as normally to seal the.bore and the outlet opening from the chamber, a the stem and its enlarged head outward y, a plurality of packings on and surrounding the stem andA normally within the bore, one near the outer end of thebore and the other near the inner end of the bore and near the chamber, so that the second mentioned packing is'carried into the chamber when the plunger is moved inwardly a little distance; and an intake opening closure member carried by said enlarged head adapted to be moved into closing relation to the intake opening when the plunger and head are moved inwardly the distance necessary to move said second mentioned packing out of the bore into the chamber, said closure member also having movement relative to the enlarged hollow head, and-a "spring acting between the head and the closure member tending to press the closure. member toward the intake opening.

2. In adispensing valve, the combination of a valve body having a discharge chamber provided with an inlet and a ixed outlet, a plunger mounted in the valve body and arranged to close communication between the `discharge chamber of the valve body and the outlet thereof, a valve member slidably supported by the plunger, and provided with a valve head, the valve member being moved by the `plunger during a predetermined movement of the latter and arranged to close the inlet to the discharge chamber durin the major portion of the movement o the plunger.

v3. In a dispensing valve, the combination Awith a valve body provided with a discharge chamber having an inlet valve seat and a fixed outlet, .a plunger slidably mounted in the valve body with the inner end thereotI extending into the discharge chamber, a valve member slidably mounted in a bore formed. in the inner end of the plunger, resilient means mounted on the valve member and acting against the said inner end of the plunger, whereby said valve member may be moved against said inlet valve seat in the discharge chamber and close the inlet to the discharge chamber after a predetermined inward movement of the valve plunger and thereafter remain seated during a further inward movement of the plunger.

4. In a dispensing valve, the combination with a valve body provided with a discharge chamber having an inlet valve seat and a relatively to the plunger and adapted to close\ the other of said ports, said plunger being provided with a channel ai'ording communi- -cation between the inlet port and-the outlet port, and yielding pressure means for moving the plunger to a position in which it closes .one of said ports.

6; A liquid dispensing. device in which is comprised a partition member and a body member removably engaging the same, said body member being provided with a. longitudinal chamber, and the partition member being provided with a valve port aifording communication between theA body chamber and a supply conduit, a plunger movable longitudinally in the body chamber and having a valve adaptedto close thevalvc port, the body being provided with an outlet, the plunger being provided witlia member cooperating with'the wall of the body to induce suction through the valve port when the plunger is moved outward, the plunger being provided with a channel affording communication between the valve port and the outlet, the plunger being adapted to close the outlet when in normal position, and means for operating the plunger.

7. In a dispensing valve, the combination of a valve body having a discharge chamber provided with an inlet and an outlet port, a piston slidably mounted therein, said piston havinga passageway formed in the inner end thereof establishing communication between the discharge chamber and a4 discharge passageway formed in the valve body, means on the piston normally sealing the discharge passageway of the valve body, a stem adapted -to seal said inlet at one end with the other end slidably engaging the piston in said passageway, resilient means for maintaining the piston in a normally outward inoperative position and sealing the valve body discharge passageway, other resilient means for normally maintaining said stem in an extended position relative to the piston and a lost motion connection between the piston and stem for normally maintaining the stem out of contact with the inlet.

8. In a dispensing valvefor liquid soap, a valve body havin@ a. displacement chamber provided with an inlet port at one end thereof, a piston bearing against the side walls of said displacement chamber, said valve body having an outlet port normally closed by the piston and the piston having a longitudinal recess and a lateral passageway communicating therewith and opening adjacent the wall of the body to form a discharge chamber, a stem supported at one endin the piston recess and'arranged to close said inlet port, a connection between the piston and stem for normally maintaining the stem outot1 contact with the inlet port, resilient means within the displacement chamber for holding the piston in outlet port closinv-position and other res- `i-lient means located 1n the recess in the piston bearin against the stem land arranged to cause the stem to close the inlet port when the piston is manipulated.

v 9. In a dispensmg valve for liquid soap, the

v combination of a Valve body having a displacement chamber provided with an inlet port, a piston in said chamber, an outlet port formed in the body normally closed by said piston, alstem extending into the piston having a lost motion connection therewith and arranged to close the inlet port, resilient means inthe displacement chamber for holding the piston in outlet port closing position and for maintaining the stem out of contact with the inlet port, and other resilient means in the piston, normally restrained, and arranged to act on the stem to close the inlet port when the piston is moved to reduce the area in said displacement chamber and to open the outlet port.

10'. In a dispensing valve, the combination of a valve body having a ldischarge chamber provided with an inlet and an outlet port, a piston slidably mounted therein, said piston having a passageway formed in the inner end thereof establishing communication between the discharge chamber and a discharge passageway formed in the valve body, means on the plunger normally sealing the discharge passageway of the valve body, a stem adapted to seal said inlet at one end with the other end slidably engaging the piston in said passageway, resilient means for maintaining the piston in a norm-ally outward inoperative position and sealing the valve body discharge passageway, other resilient means for normally maintaining said stem in an extended position relative to the piston and a lost motion connection between the plunger and stem for normally maintaining the stem out of contact with the inlet; said lost motion c onnectionA including valve means which seals the piston passageway when the stem -isin its position extended relatively to the piston.

In witness that I claim the foregoing I have hereunto subscribed my name.

GABRIEL A. BoBRIoK. 

